Github user megatron-me-uk commented on a diff in the pull request:
https://github.com/apache/spark/pull/6262#discussion_r32785462
--- Diff: python/pyspark/tests.py ---
@@ -874,6 +874,15 @@ def
test_sortByKey_uses_all_partitions_not_only_first_and_last(self):
for size in sizes:
self.assertGreater(size, 0)
+ def test_pipe_functions(self):
+ data = ['1', '2', '3']
+ rdd = self.sc.parallelize(data)
+ with QuietTest(self.sc):
+ self.assertRaises(Py4JJavaError, rdd.pipe('cc').collect)
+ result = rdd.pipe('cat').collect()
--- End diff --
I can do although I think a non-zero code from grep will raise an Exception
in the scala implementation. See (that I just found):
https://github.com/apache/spark/blob/master/core/src/test/scala/org/apache/spark/rdd/PipedRDDSuite.scala
I see that grep will return 1 if it doesn't match any lines in a partition.
Raising an exception in this case may well be annoying but other shell
functions can return 1 on errors (for example
http://www.postgresql.org/docs/8.3/static/app-psql.html). I wonder what the
best solution is here?
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